A

Admin • 825.56K Points
Coach

Q. Pipe A fills a tank in 3 hours and pipe B empties it in 6 hours. If both are opened together, how long will it take to fill the tank?

  • (A) 3 hours
  • (B) 4 hours
  • (C) 6 hours
  • (D) No filling
Explanation by: Admin
Net rate = 1/3 − 1/6 = 1/6.

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